Either F9 or CONTROL and B
text is displayed but not mirrored
Blocks can only be inserted into a drawing if they already exist in that drawing.
make it invisible and prevent regeneration
the pair of coordinate points which define the lower left and upper right corners of the drawing boundary
change the values of the system variables
The space is always an alternative to the enter key.
all commands issued since the drawing was last loaded into the drawing editor
ZOOM ALL makes all objects visible irrespective of the layer visibility state.
Picks the previously picked group of objects
a me of setting the initial drawing environment for new drawings
it converts 2D drawings to 3D
speed up drawing regeneration by replacing text with rectangles
1:10 in A4 size drawing