To insert symbols, put the cursor where a symbol needs to be inserted and click the menu command "Edit | Insert Symbol". Select the symbol you want to insert and click the "Insert" button. If you know the ASCII code number, you can hold down the Alt key and enter the ASCII code number using the number pad key on the right of your keyboard.
Biblioscape does not support formatted text in data fields of a reference except the "Document" field. If a Greek letter is selected for insertion, the English letters will be used instead. In the Biblioscape scripts for Word and WordPerfect, a menu has been added to convert English words for Greek letters into the correct symbols. You can also include RTF code directly into the Biblioscape data fields. Once the reference is formatted by Biblioscape, those RTF codes will be used. This is very flexible if you know RTF well.