The first step is to open a new style sheet. You can do this by selecting File | New from the program menu, or clicking the 'New' or 'Quick Start' buttons.
To customize an existing tag (such as <B> select it from the toolbar 'Pick a Tag' drop down box. The following will be inserted into your document:
B {
{
All style sheet tags must be placed between the { } characters.
Next, ensure the cursor is placed between the { } characters and then select a choice from the right side toolbar or Tags menu. Your choices are Font, Color and Background, Alignment, Margins, Padding and Borders. You can use multiple properties for each tag.
For more detailed information, consult the help file.