The Tab keys

In formula modes, the tab keys may be used to set
symbols. You hit it, then you release it, then you hit a a, ..., z key.

Here are the symbol you get:

tab a: default integral part. More...
tab b: start a direct sum. More...
tab c: make a "upstair" relation. More...
tab d: start a index. More...
tab e: excess integral part. More...
tab f: start a fraction. More...
tab g: make a "downstair" relation. More...
tab G: start a scalar product. More...
tab h: start an union. More...
tab H: start an intersection. More...
tab i: start an integral. More...
tab j: start an underbrace. More...
tab k: start an overbrace. More...
tab m: start a matrix. More...
tab n: start a norm. More...
tab p: start an infinite product. More...
tab P: start a wedge product. More...
tab r: start a square root. More...
tab s: start a sum. More...
tab u: start an exponent. More...
tab v: start an absolute value. More...
tab {: start a left accolade. More...
tab }: start a right accolade. More...
tab (: start a pair of parenthesis. More...
tab [: start a pair of brackets. More..