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# nextkey -- the next key in a database

## Description

nextkey f -- return the next key available in the database file f.

Returns null if none.

## See also

- Database -- the class of all database files

## For the programmer

The object nextkey is a compiled function.

The source of this document is in /build/macaulay2-88fgJW/macaulay2-1.25.11+ds/M2/Macaulay2/packages/Macaulay2Doc/ov_system.m2:1652:0.