We are using circle numbers to refer to a Creo Illustrate CAD graphic that has a number 1 or 2 or whatever in a circle that points to a component in that graphic. Our implementation uses the <ph> tag like this:
<ph>1<ph> will display the number one in a circle wherever this is inserted in the text.
Originally, the stylesheet would put a PNG image or EPS image of a number with a circle wherever this was used when published to PDF or Web. By styling it with an element like <ph> all of our manuals update when we change the GENTEXT code.
So we now are using the CombiNumerals font but are looking at purchasing a different font that we like better that is easier to read. Simply install the font on the Arbortext + Styler machine for working on the stylesheet, also install it on the PE and the manuals will update automatically the next time they are published. Everything still works with <ph>27<ph> or whatever number is in the tags.
Easy right? 