The system's design is good, though the colour scheme needs some improvement to increase the degree of contrast between the strokes of a recognised symbol, its bounding boxes and label.
The system's main screen, where the user enters their formula, is relatively uncluttered. Most of the area is the drawing area were the user enters their formulae.
There are relatively few dialogue boxes in the system. The options screen, primarily for making adjustments for debugging purposes, is not suitable for a final product. There is a list of twenty items from colour scheme to formula processor settings.
The other main dialogue box encountered by users is the LATEX preview window. This is very simple. The window displays the formula generated from the LATEX generated for their formula, and has a text entry area at the top which the user can copy and paste the LATEX code from. The user can also edit this code and regenerate the preview.
The only other dialogues in the system are standard Tcl/Tk load and save dialogue boxes.
The shading and annotation that the system does of the symbols entered by the user adds a degree of extra complexity to the display, though it is not overly obtrusive.