What Does the Raising the Fold in Breast Lift Mean?

"Raising the fold”  refers to moving the inframammary fold ( the junction between the breast and the abdominal wall skin) superiorly.  This can be done as part of a breast lift operation or as part of a revisionary breast operation.  Exactly,  what is necessary to raise the inframammary fold will depend on the specific patients situation.

I hope this helps.

To their credit both my colleagues have answered your question extremely well. I have nothing more to add. 
Go see another board certified plastic surgeon for further explanations.

SEE VIDEO BELOW FOR EXAMPLES:
"Raising the fold" refers to the breast crease where your underwire normally sits. WE call this the InfraMammary Fold or IMF.
This is not a breast lift and is most commonly performed when:

an implant bottoms out
a mastectomy eliminates or disrupts the fold
congenital causes (asymmetry or in scoliosis) are responsible

This can be performed with an external incision or with an internal incision.
When it occurs following placement of an implant it can sometimes be accomplished using an internal "capsulorraphy" technique.