This function is for use with text fields that are separated into multiple sections - either using commas or using any other series of one or more characters as separator characters to define the 'boundaries' of each section. It allows a specific section to be retrieved.
See also TextPart.
Assuming the input text (%INDI.NOTE2%) contains "ready||steady||go", the following function calls will return the values shown:
=Section(%INDI.NOTE2%,1,"||") | ready |
=Section(%INDI.NOTE2%,2,"||") | steady |
=Section(%INDI.NOTE2%,3,"||") | go |