The existing XTR'SHOW3D field has been replaced with XTR'MISCFLAGS to allow more options to share the byte. To maintain backward compatibility, the new field overlays the old one, and the option bits are defined to avoid conflict:
...
MAP2 XTR'SHOW3D,B,1 ! display using 3D mode
MAP2 XTR'MISCFLAGS,B,1,@XTR'SHOW3D ! misc flags (XTMF_xxx)
...
So far, the following flags are defined (in XTREE.DEF):
define XTMF_SHOW3D = &h01 ! 3D mode
define XTMF_INTHEIGHT = &h02 ! make height integral # of rows
define XTMF_INHERITBG = &h04 ! left margin inherits bg from 1st col
The XTMF_INTHEIGHT option applies only to trees with fixed-height rows (XTF_VARY is not set), forcing the overall height of the tree to be reduced slightly to avoid a partially displayed row.
The XTMF_INHERITBG option affects the background of the left margin area, which, depending on many factors, may be visible to the left of the first column.
