Yes, I use bar-based section letters for this (right-click on a measure number).

One of my songs might look like this:

I - intro
A
B - second A part (second verse)
C - bridge
S - solo
V - vamp
B
C
T - tag

etc.

In the jazz world, A generally means first verse, B second (often a repeat of the A section taking a second ending into the C bridge).

And just checking, does everyone know about the Song Form Maker in BIAB? In the old interface, it's an icon in the next to the bottom row of icons, over to the right. In the new interface, it's just called Form and it's an icon in the Tools tab of the new toolbar.

BIAB 2026 Win Audiophile. Software: Fender Studio One 8, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Presonus Quantom HD8 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.