diff --git a/client/include/interface/renderer.h b/client/include/interface/renderer.h
index ebbd6e5b..489f984b 100644
--- a/client/include/interface/renderer.h
+++ b/client/include/interface/renderer.h
@@ -35,6 +35,7 @@ Place, Suite 330, Boston, MA 02111-1307 USA
    (x)->on_mouse_shape && \
    (x)->on_mouse_event && \
    (x)->on_alert       && \
+   (x)->on_help        && \
    (x)->render_startup && \
    (x)->render         && \
    (x)->update_fps)
@@ -114,6 +115,7 @@ typedef bool         (* LG_RendererOnMouseEvent )(void * opaque, const bool visi
 typedef bool         (* LG_RendererOnFrameFormat)(void * opaque, const LG_RendererFormat format, bool useDMA);
 typedef bool         (* LG_RendererOnFrame      )(void * opaque, const FrameBuffer * frame, int dmaFD);
 typedef void         (* LG_RendererOnAlert      )(void * opaque, const LG_MsgAlert alert, const char * message, bool ** closeFlag);
+typedef void         (* LG_RendererOnHelp       )(void * opaque, const char * message);
 typedef bool         (* LG_RendererRenderStartup)(void * opaque);
 typedef bool         (* LG_RendererRender       )(void * opaque, LG_RendererRotate rotate);
 typedef void         (* LG_RendererUpdateFPS    )(void * opaque, const float avgUPS, const float avgFPS);
@@ -134,6 +136,7 @@ typedef struct LG_Renderer
   LG_RendererOnFrameFormat  on_frame_format;
   LG_RendererOnFrame        on_frame;
   LG_RendererOnAlert        on_alert;
+  LG_RendererOnHelp         on_help;
   LG_RendererRenderStartup  render_startup;
   LG_RendererRender         render;
   LG_RendererUpdateFPS      update_fps;
diff --git a/client/renderers/EGL/egl.c b/client/renderers/EGL/egl.c
index 7242b946..c4c9f081 100644
--- a/client/renderers/EGL/egl.c
+++ b/client/renderers/EGL/egl.c
@@ -476,6 +476,11 @@ void egl_on_alert(void * opaque, const LG_MsgAlert alert, const char * message,
   this->showAlert = true;
 }
 
+void egl_on_help(void * opaque, const char * message)
+{
+  // TODO: Implement this.
+}
+
 bool egl_render_startup(void * opaque)
 {
   struct Inst * this = (struct Inst *)opaque;
@@ -729,6 +734,7 @@ struct LG_Renderer LGR_EGL =
   .on_frame_format = egl_on_frame_format,
   .on_frame        = egl_on_frame,
   .on_alert        = egl_on_alert,
+  .on_help         = egl_on_help,
   .render_startup  = egl_render_startup,
   .render          = egl_render,
   .update_fps      = egl_update_fps
diff --git a/client/renderers/OpenGL/opengl.c b/client/renderers/OpenGL/opengl.c
index b2e3ed1e..a8f97fbd 100644
--- a/client/renderers/OpenGL/opengl.c
+++ b/client/renderers/OpenGL/opengl.c
@@ -461,6 +461,11 @@ void opengl_on_alert(void * opaque, const LG_MsgAlert alert, const char * messag
   ll_push(this->alerts, a);
 }
 
+void opengl_on_help(void * opaque, const char * message)
+{
+  // TODO: Implement this.
+}
+
 void bitmap_to_texture(LG_FontBitmap * bitmap, GLuint texture)
 {
   glBindTexture(GL_TEXTURE_2D       , texture      );
@@ -823,6 +828,7 @@ const LG_Renderer LGR_OpenGL =
   .on_frame_format = opengl_on_frame_format,
   .on_frame        = opengl_on_frame,
   .on_alert        = opengl_on_alert,
+  .on_help         = opengl_on_help,
   .render_startup  = opengl_render_startup,
   .render          = opengl_render,
   .update_fps      = opengl_update_fps