In FLEx, you can choose which fields to display in an entry, including choice of color, font, and font size, and the order the fields are displayed. Go to Tools -> Configure -> Dictionary... Clicking on the Help button in this dialog box will bring up the Configure Dictionary dialog box with detailed instructions on how to configure each field in the different entry types.
In FLEx 8.3 and beyond, the Dictionary view shows how the dictionary will appear in Webonary.
Splitting XHTML files
If your dictionary is very large, it might timeout during import. You might therefore need to import your data in several goes. In FLEx filter by headword entries, for example only words that start from A - N.