programming languages. With flow control, you can create more sophisticated SSI scripts.
There are four flow control elements:
<!--#if expr="test-condition"-->
<!--#elif expr="test-condition"-->
<!--#else-->
<!--#endif-->
<!--#elif expr="test-condition"-->
<!--#else-->
<!--#endif-->
The test-condition is one of the following:
| Test Condition | Description |
| string | True if the string is not empty |
| sring1=string2 | True if string1 matches string2 |
| string1!=string2 | True if string1 does not match string2 |
| (test-condition) | True if test-condition is true |
