Amazing to see how this little app evolves in something AMAZINGLY useful. Can't wait to see & try next version!
I have few suggestions if I may - nothing terribly critical, more like "nice to have":
ability to change the highlight color and/or opacity of the highlight color
align to left/top feature is awesome, would be great to get align to right and bottom, too
BOM (is pretty decent btw) - few options for grouping e.g. option for horizontal line up in addition to the current vertical, per color, per shape or something like that
ability to change preferences for the submodel - horizontal in addition to current vertical
ability to save preferences in regards to the page setup so that the setting don't reset each time the program is started (dimensions, zoom, highlights)
"File -> New" is kinda' missing
possibility of adding custom text in Page layout mode, or even draw arrows
PLEASE - don't take this as criticism, I am just thinking loudly here and spitting out few things which came to my mind, when using this program. Seriously, it's great so please keep up the good work.
PS: I would be definitely willing to spend few $$ if it was a paid program (final release, for a reasonable price, though ;))
Thanks!