What are the various prefixes associated with SAP screen elements?

F[...] Field

G[...] Field group

P[...] Pushbutton

R[...] Radiobutton

C[...] Check box

S[...] Tabstrip

T[...] Table

X[...] ActiveX (OCX) control

A[...] Area

V[...] GuiXT variable

U[...] Input script parameter