Bi-fold doors for curtain walls

[hkeller]

Greetings...

Would andbody know the best way to create a 4 panel bi-fold glass door that sits in a curtain wall panel?

[ita]

. . . and . . . while on the topic of Bi Folds and Multi Folds, does anyone have a sensible/rational/effective symbolic line system or method for showing the tracking of the panels on plan?