MTEXTFIXED system variable
Function Description:
The MTEXTFIXED system variable is used to set the display size and direction of mtext in specified text editor.
Type : Integer 
Saved in : Registry 
Initial value : 
Range : 0,1,2 
System Variable Value:
0/1 : display in-place text editor and the text within it with the same size, position, and rotation of the multiline text object in the drawing
2 : display in-place text editor and the text within it with the same size, position, and rotation of the multiline text object in the drawing. Text that would otherwise be                 difficult to read (if it is very small, very large, or is rotated) is displayed at a legible size and is oriented horizontally so that users could easily read and edit it.