-SYNC\r\rSYNC\rType: directive\rForces an intermediate update of the GUI.\rIn case of an OpenGL canvas, this directive will force a buffer swap also. This particularly should be used when the GL canvas has option GL_FREEZE enabled (see HUGOPTIONS), or in case a non-HUG drawing is applied, so when using plain OpenGL functions directly. In both cases, before the actual GL drawing is executed, the buffer should have been prepared with DRAW.\r
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+SYNC
+
+SYNC
+Type: directive
+Forces an intermediate update of the GUI.
+In case of an OpenGL canvas, this directive will force a buffer swap also. This particularly should be used when the GL canvas has option GL_FREEZE enabled (see HUGOPTIONS), or in case a non-HUG drawing is applied, so when using plain OpenGL functions directly. In both cases, before the actual GL drawing is executed, the buffer should have been prepared with DRAW.