2.8 Help Index

The operator ?? looks up topic in GAP's index and prints all the index entries that contain the substring topic. Then you can decide which section is the one you are actually interested in and request this one.

gap> ??read
Help: several entries match this topic
[1] reference:read
[2] reference:reading sections
[3] reference:readlib
[4] reference:isreadablefile
[5] reference:read
...

The first part of each line is a reference number. Then follows the part of the manual which contains the section and finally the actual name of the (sub)section. All names are converted to lower case.

The order of the sections corresponds to their order in the GAP manual, so that related sections should be adjacent.

You can then either refer to the desired subsection by its name or simply use ?nr to look at the topic with the reference number nr. So in the above example ?3 would display the section on ReadLib.

When referring to sections by their name you can usually omit the part of the manual unless several parts contain the same section names.

If there are several subsections which have exactly the same name, a number in parentheses is added to the name to distinguish these.

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