Sets top and left margin in cel data buffer.
void SetTextCelMargins (TextCel *tCel, int32 leftMargin, int32 topMargin)
Sets the top and left margins within the cel data buffer. When you erase the text in a cel, the pen returns to the top and left margin values. When the pen encounters a newline in the text, the pen returns to the left-margin value (and down to the next text line).
If you set a margin value greater than the width and/or height of the cel, all text rendered into the cel will be clipped.
lib3do.lib, textlib.h