diff --git a/callback.d b/callback.d
new file mode 100644
index 0000000..72ca2c2
--- /dev/null
+++ b/callback.d
@@ -0,0 +1,5 @@
+callback.o: callback.c tree.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib.h \
+ display.h contain.h texts.h in_depth.h parsing.h base.h graph_area.h \
+ /gnu/store/0gxl8awg16qysdmxsflwnz0gyynrgs99-mesa-24.0.4/include/GL/glext.h \
+ /gnu/store/0gxl8awg16qysdmxsflwnz0gyynrgs99-mesa-24.0.4/include/KHR/khrplatform.h
diff --git a/callback.o b/callback.o
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index 0000000..0dc33b8
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diff --git a/contain.d b/contain.d
new file mode 100644
index 0000000..dbb58bb
--- /dev/null
+++ b/contain.d
@@ -0,0 +1,3 @@
+contain.o: contain.c callback.h display.h tree.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib.h \
+ contain.h texts.h
diff --git a/contain.o b/contain.o
new file mode 100644
index 0000000..af30f0c
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diff --git a/display.d b/display.d
new file mode 100644
index 0000000..fb49706
--- /dev/null
+++ b/display.d
@@ -0,0 +1,3 @@
+display.o: display.c contain.h tree.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib.h \
+ display.h texts.h
diff --git a/display.o b/display.o
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index 0000000..2bd4e21
Binary files /dev/null and b/display.o differ
diff --git a/draw.c.todo b/draw.c.todo
new file mode 100644
index 0000000..53f0079
--- /dev/null
+++ b/draw.c.todo
@@ -0,0 +1,207 @@
+/*
+ *      Gem-graph OpenGL experiments
+ *
+ *      Desc: GL functions
+ *
+ *  Copyright (C) 2023 Adrien Bourmault <neox@a-lec.org>
+ *  Copyright (C) 2023 Jean Sirmai <jean@a-lec.org>
+ *
+ *  This file is part of Gem-graph.
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ *  Writes values to describe a vertex at (x,y,z) intoq the vertex buffer
+ *
+ *  @param coords GLfloat(x,y,z)
+ *
+ *  @return void
+ */
+
+#include <stdlib.h>
+#include <time.h>
+#include <cglm/cglm.h>
+#include "base.h"
+//#include "ui.h"
+#include "graph_area.h"
+
+void graphics_draw_vertex (const int stack_id,
+                           GLfloat x,
+                           GLfloat y,
+                           GLfloat z)
+{
+    //g_printerr("stack_id is %d\n", stack_id);
+    //g_printerr("stack_id is %d\n", stack_id);
+    //g_printerr("graphic_stack is at %p\n", graphic_stack);
+    //g_printerr("graphic_stack[stack_id] is at %p\n", graphic_stack + stack_id);
+    volatile struct graphic_stack_t *stack = &graphic_stack[stack_id];
+
+    //g_printerr("Currently stack->buffer_vertex_origin @ %p\n", stack->buffer_vertex_origin);
+
+    //assert (stack->buffer_vertex_origin);
+
+    stack->buffer_vertex_origin =
+            g_realloc (stack->buffer_vertex_origin,
+                       (stack->buffer_vertex_size + 3) * sizeof(GLfloat));
+    //print_stack(stack_id);
+
+    stack->buffer_vertex_origin[stack->buffer_vertex_size + 0] = x;
+    stack->buffer_vertex_origin[stack->buffer_vertex_size + 1] = y;
+    stack->buffer_vertex_origin[stack->buffer_vertex_size + 2] = z;
+
+    stack->buffer_vertex_size += 3;
+}
+
+/*
+ *  Writes values to describe a color (r,g,b) into the color buffer
+ *
+ *  @param color GLfloat(r,g,b)
+ *
+ *  @return void
+ */
+void graphics_draw_color (const int stack_id,
+                          GLfloat r,
+                          GLfloat g,
+                          GLfloat b)
+{
+    struct graphic_stack_t *stack = &graphic_stack[stack_id];
+
+    stack->buffer_colors_origin = g_realloc (stack->buffer_colors_origin,
+                                     (stack->buffer_colors_size + 3) * sizeof(GLfloat));
+
+    assert (stack->buffer_colors_origin);
+
+    stack->buffer_colors_origin[stack->buffer_colors_size + 0] = r;
+    stack->buffer_colors_origin[stack->buffer_colors_size + 1] = g;
+    stack->buffer_colors_origin[stack->buffer_colors_size + 2] = b;
+
+    stack->buffer_colors_size += 3;
+}
+
+/*
+ *  Writes values to describe a line from a to b into the line buffer
+ *
+ *  @param coords GLuint (a,b)
+ *
+ *  @return void
+ */
+void graphics_draw_line (const int stack_id,
+                         GLuint a,
+                         GLuint b)
+{
+    struct graphic_stack_t *stack = &graphic_stack[stack_id];
+
+    stack->buffer_lines_origin = g_realloc (stack->buffer_lines_origin,
+                                    (stack->buffer_lines_size + 2) * sizeof(GLuint));
+
+    assert (stack->buffer_lines_origin);
+
+    stack->buffer_lines_origin[stack->buffer_lines_size + 0] = a;
+    stack->buffer_lines_origin[stack->buffer_lines_size + 1] = b;
+
+    stack->buffer_lines_size += 2;
+}
+
+/*
+ *  Writes values to describe an (a,b,c) plan (triangle) into the plan buffer
+ *
+ *  @param coords GLuint (a,b,c)
+ *
+ *  @return void
+ */
+void graphics_draw_plan (const int stack_id,
+                         GLuint a,
+                         GLuint b,
+                         GLuint c)
+{
+    struct graphic_stack_t *stack = &graphic_stack[stack_id];
+
+    stack->buffer_plans_origin = g_realloc (stack->buffer_plans_origin,
+                                    (stack->buffer_plans_size + 3) * sizeof(GLuint));
+
+    assert (stack->buffer_plans_origin);
+
+    stack->buffer_plans_origin[stack->buffer_plans_size + 0] = a;
+    stack->buffer_plans_origin[stack->buffer_plans_size + 1] = b;
+    stack->buffer_plans_origin[stack->buffer_plans_size + 2] = c;
+
+    stack->buffer_plans_size += 3;
+}
+
+/*
+ * Draws the current buffer to a gl_area
+ *
+ * @param   gl_area, ptr to the gl_area widget
+ *
+ * @return  void
+ */
+void graphics_draw(const int stack_id)
+{
+    struct graphic_stack_t *stack = &graphic_stack[stack_id];
+
+    //g_printerr("[debug] graphics_draw() started\n");
+
+    //print_stack(stack_id);
+
+    GLint cur_viewport[4];
+    glGetIntegerv(GL_VIEWPORT, cur_viewport);
+
+    mat4 m = GLM_MAT4_IDENTITY_INIT;
+    glm_rotate_x(m, glm_rad(stack->rotation_angles[X_AXIS]), m);
+    glm_rotate_y(m, glm_rad(stack->rotation_angles[Y_AXIS]), m);
+    glm_rotate_z(m, glm_rad(stack->rotation_angles[Z_AXIS]), m);
+
+    mat4 v = GLM_MAT4_IDENTITY_INIT; // XXX define zoom and translations here ?
+
+    mat4 p = GLM_MAT4_IDENTITY_INIT;
+    //glm_ortho(-1.0f, +1.0f, -1.0f, +1.0f, -1.0f, +1.0f, p);
+    glm_ortho_default((float)cur_viewport[2] / (float)cur_viewport[3], p);
+    //glm_perspective_default((float)cur_viewport[2] / (float)cur_viewport[3], p);
+
+    /* Use our shaders */
+    glUseProgram(stack->program);
+
+    glClearColor(0, 0, 0, 1);
+    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+    /* Update the "mvp" matrix we use in the shader */
+    glUniformMatrix4fv(stack->m, 1, GL_FALSE, (float *)m);
+    glUniformMatrix4fv(stack->v, 1, GL_FALSE, (float *)v);
+    glUniformMatrix4fv(stack->p, 1, GL_FALSE, (float *)p);
+
+    /* Use the vertices in our buffer */
+    glEnableVertexAttribArray(0);
+    glBindBuffer(GL_ARRAY_BUFFER, stack->position_buffer);
+    glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0,(void*)0);
+
+    // couleurs
+    glEnableVertexAttribArray(1);
+    glBindBuffer(GL_ARRAY_BUFFER, stack->color_buffer);
+    glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 0,(void*)0);
+
+    //glEnable(GL_DEPTH_TEST);
+
+    glDrawElements(GL_LINES, stack->buffer_lines_size, GL_UNSIGNED_INT, stack->buffer_lines_origin);
+    glDrawElements(GL_TRIANGLES, stack->buffer_plans_size, GL_UNSIGNED_INT, stack->buffer_plans_origin);
+
+    /* We finished using the buffers and program */
+    glDisableVertexAttribArray(0);
+    glDisableVertexAttribArray(1);
+    glBindBuffer(GL_ARRAY_BUFFER, 0);
+    glUseProgram(0);
+
+    glFlush();
+    //g_printerr("[debug] graphics_draw() ended\n");
+}
diff --git a/graph_area.d b/graph_area.d
new file mode 100644
index 0000000..19fb827
--- /dev/null
+++ b/graph_area.d
@@ -0,0 +1,6 @@
+graph_area.o: graph_area.c \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib.h \
+ contain.h graph_area.h \
+ /gnu/store/0gxl8awg16qysdmxsflwnz0gyynrgs99-mesa-24.0.4/include/GL/glext.h \
+ /gnu/store/0gxl8awg16qysdmxsflwnz0gyynrgs99-mesa-24.0.4/include/KHR/khrplatform.h \
+ base.h callback.h
diff --git a/graph_area.h b/graph_area.h
index 7365f96..3a5b64a 100644
--- a/graph_area.h
+++ b/graph_area.h
@@ -32,6 +32,7 @@
 #include <cglm/cglm.h>
 
 #include "base.h"
+//#include "draw.c"
 
 #define VERTEX_SHADER_FILE "src/graphics/shaders/shader.vert"
 #define FRAG_SHADER_FILE "src/graphics/shaders/shader.frag"
diff --git a/graph_area.o b/graph_area.o
new file mode 100644
index 0000000..e9bdb33
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diff --git a/graph_stack.d b/graph_stack.d
new file mode 100644
index 0000000..252928c
--- /dev/null
+++ b/graph_stack.d
@@ -0,0 +1,6 @@
+graph_stack.o: graph_stack.c contain.h graph_area.h \
+ /gnu/store/0gxl8awg16qysdmxsflwnz0gyynrgs99-mesa-24.0.4/include/GL/glext.h \
+ /gnu/store/0gxl8awg16qysdmxsflwnz0gyynrgs99-mesa-24.0.4/include/KHR/khrplatform.h \
+ base.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib.h \
+ parsing.h
diff --git a/graph_stack.o b/graph_stack.o
new file mode 100644
index 0000000..68f6ce7
Binary files /dev/null and b/graph_stack.o differ
diff --git a/in_depth.d b/in_depth.d
new file mode 100644
index 0000000..cced342
--- /dev/null
+++ b/in_depth.d
@@ -0,0 +1 @@
+in_depth.o: in_depth.c callback.h
diff --git a/in_depth.o b/in_depth.o
new file mode 100644
index 0000000..d78f4ff
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diff --git a/init.d b/init.d
new file mode 100644
index 0000000..23f08cd
--- /dev/null
+++ b/init.d
@@ -0,0 +1,91 @@
+init.o: init.c base.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/galloca.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gtypes.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/lib/glib-2.0/include/glibconfig.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gmacros.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gversionmacros.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/glib-visibility.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/garray.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gasyncqueue.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gthread.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gatomic.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/glib-typeof.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gerror.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gquark.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gutils.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gbacktrace.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gbase64.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gbitlock.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gbookmarkfile.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gdatetime.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gtimezone.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gbytes.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gcharset.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gchecksum.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gconvert.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gdataset.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gdate.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gdir.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/genviron.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gfileutils.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/ggettext.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/ghash.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/glist.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gmem.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gnode.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/ghmac.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gchecksum.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/ghook.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/ghostutils.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/giochannel.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gmain.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gpoll.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gslist.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gstring.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gunicode.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gstrfuncs.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gkeyfile.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gmappedfile.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gmarkup.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gmessages.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gvariant.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gvarianttype.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/goption.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gpathbuf.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gpattern.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gprimes.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gqsort.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/gqueue.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/grand.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/grcbox.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/grefcount.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/grefstring.h \
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+ contain.h graph_area.h \
+ /gnu/store/0gxl8awg16qysdmxsflwnz0gyynrgs99-mesa-24.0.4/include/GL/glext.h \
+ /gnu/store/0gxl8awg16qysdmxsflwnz0gyynrgs99-mesa-24.0.4/include/KHR/khrplatform.h
diff --git a/init.o b/init.o
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diff --git a/main.d b/main.d
new file mode 100644
index 0000000..6c89c45
--- /dev/null
+++ b/main.d
@@ -0,0 +1 @@
+main.o: main.c callback.h
diff --git a/main.o b/main.o
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index 0000000..396a812
Binary files /dev/null and b/main.o differ
diff --git a/myprogram b/myprogram
new file mode 100755
index 0000000..ce3e784
Binary files /dev/null and b/myprogram differ
diff --git a/parsing.d b/parsing.d
new file mode 100644
index 0000000..329b8de
--- /dev/null
+++ b/parsing.d
@@ -0,0 +1,112 @@
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+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/deprecated/gmain.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/deprecated/grel.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/deprecated/gthread.h \
+ /gnu/store/hsby4biv4wjywr7slvjf0ykk1xzf31xb-glib-2.78.0/include/glib-2.0/glib/glib-autocleanups.h
diff --git a/parsing.o b/parsing.o
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diff --git a/texts.d b/texts.d
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index 0000000..18de62c
--- /dev/null
+++ b/texts.d
@@ -0,0 +1 @@
+texts.o: texts.c
diff --git a/texts.o b/texts.o
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diff --git a/tree.d b/tree.d
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--- /dev/null
+++ b/tree.d
@@ -0,0 +1 @@
+tree.o: tree.c contain.h texts.h callback.h
diff --git a/tree.o b/tree.o
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