.?

Displays help.

! str

Searches the stack for the first entry containing the string that it displays and executes.

.l

Lists stack.

.l n 

Lists top n stack entries.

.l m-n

Lists stack entries m through n.

.r

Displays top stack entry and allows modification.

.rn 

Displays stack entry n and allows modification.

.rn/str1/str2

Replaces string 1 with string 2 in stack entry n.

.run/str1/str2

Replaces all occurrences of string 1 with string 2 in stack entry n.

.de

Deletes top stack entry.

.den 

Deletes top n stack entries.

.den/str

Deletes any n stack entries containing a string.

.x

Executes top stack entry.

.{x}n{,n}

Executes stack entry n. x pops to the top of stack.

.x name 

Executes macro created by the .c command

.x file.name

Executes macro name in file.

.cn{,n}

Creates macro from specified stack entries.

.con{,n}

Creates macro, overwriting.