Because each EQUEL statement may generate several Fortran statements, you must use the block-style Fortran if statement to conditionally transfer control to EQUEL statements. For example:

EQUEL also generates many nested constructs of do loops and if blocks specifically for block-structured statements, such as display and unloadtable. If you omit an end if from your Fortran source, the Fortran compiler complains that there is a missing end statement, which you may trace back to a preprocessor-generated if.

You can solve this problem by checking for matching if-end pairs in the original EQUEL/Fortran source file.