Introduction

Loops are control flow functions where the following statements or blocks are executed repeatedly until a condition to stop repeating is met.

• while() / until(): The subsequent statements or block are exected repeatedly as long the condition inside the while-function call is met.
• do ... while() / until(): Checking the condition whether to continue the loop is done after the loop is executed for the first time.
• for(): Loop statement where an interator variable is initialized, then repeatedly checked and updated (typically incremented) at the end over every loop.

In addition, a sesries of for all ...() statements exist which loop throgh parameter sets, variables

• for all parameters()
• for all variables()

Further more, see the seeparate section on control flow functions for tables where the following functions, mostly loops, are defined:

• with table()
  
• for all table rows()
• for all table selected rows()
• for all table columns()
• for all table selected columns()
• for all current table columns()
• for all current table selected columns()

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Procedures and Functions Provided:

do-loop:
    do

for-loop:
    for

Loops:
    until
    while

parameter set, for-loop through parameter elements:
    for all parameters

for-loop through variables:
    for all variables
    for all variables if existing
    for all variables if existing and valid