Flow of control commands

Available commands are:

break(TCL)

terminates a looping command

case(TCL)

evaluates one of several scripts, depending on a given value

catch(TCL)

evaluates a script and traps exceptional returns

continue(TCL)

skips to the next iteration of a loop

eval(TCL)

evaluates a Tcl script

exec(TCL)

invokes subprocess(es)

exit(TCL)

ends the application

expr(TCL)

evaluates an expression

for(TCL)

initiates a for loop

foreach(TCL)

iterates over all elements in a list

if(TCL)

executes scripts conditionally

incr(TCL)

increments the value of a variable

proc(TCL)

creates a Tcl procedure

return(TCL)

returns from a procedure

source(TCL)

evaluates a file as a Tcl script

subst(TCL)

performs backslash, command, and variable substitutions

switch(TCL)

evaluates one of several scripts, depending on a given value

trace(TCL)

monitors variable accesses

unknown(TCL)

handles attempts to use non-existent commands

uplevel(TCL)

executes a script in a different stack frame

while(TCL)

executes a script repeatedly as long as a condition is met