Please add some options when sections and details are created that you can toggle "alpha only" for sections and "numeric only" for details; ie Section A-A, Detail 1.
And add in those same options to be able to toggle on/off the ASME Y14.35M standard that skips letters I, O, Q, S, Z, and X.
Also adding a check that will warn you if duplicate section/detail numbers are being used.
And while we are at it, add the option for parent and child sheet information to sections and details; ie Section A-A, sheet 3 and vice versa.