The following if commands enable branching based on different conditions:
| Command | Description |
| ifstr | ifstr Value1 {==|!=} Value2 Compare Value1 to Value2, case sensitively |
| ifstr(i) | ifstr(i) Value1 {==|!=} Value2 Compare Value1 to Value2, case insensitively |
| ifint | ifint Value1 {==|!=|<=|>=|<|>} Value2 Compare Value1 to Value2 as integers, after using the atol() function to convert the value strings into LONG values. |
| ifcontains | ifcontains Value {in|not-in} List Compares case-sensitively the Value string to the string items in List. The “in” and “not-in” comparison operators enable branching based on whether the string is in or not in the list. |
| ifcontains(i) | ifcontains(i) Value {in|not-in} List Same as ifcontains, except that comparisons are case-insensitive. |
For every if... command variation, there is a corresponding else-if... command, that uses the same syntax.
The various if statements are followed by a block of lines that are executed if the expression evaluates to TRUE. The block is terminated by either an endif statement or by one of a set of else statements (else, else-ifstr, else-ifstr(i), else-ifint, else-ifcontains, or else-ifcontains(i)). For every if... or else-if... statement, there must be a corresponding endif statement. If statements can be nested. For example:
ifstr
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else-ifint
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else
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endif
endif