refer(1) - phpMan

B::Xref (3pm)        - Generates cross reference reports for Perl programs
cxref (1p)           - generate a C-language program cross-reference table (D...
git-check-ref-format (1) - Ensures that a reference name is well formed
git-ls-remote (1)    - List references in a remote repository
git-peek-remote (1)  - List the references in a remote repository
git-show-ref (1)     - List references in a local repository
I18N::LangTags::Detect (3pm) - detect the user's language preferences
isatty (3)           - test whether a file descriptor refers to a terminal
man (1)              - an interface to the on-line reference manuals
mdoc (7)             - quick reference guide for the -mdoc macro package
Module::Build::API (3pm) - API Reference for Module Authors
ntp_clock (5)        - Reference Clock Options
papersize (5)        - specify preferred paper size
perlobj (1)          - Perl object reference
perlref (1)          - Perl references and nested data structures
perlreftut (1)       - Mark's very short tutorial about references
perlreref (1)        - Perl Regular Expressions Reference
perlxs (1)           - XS language reference manual
ri (1)               - Ruby API reference front end
rrdgraph_graph (1)   - rrdtool graph command reference
Tie::RefHash (3pm)   - use references as hash keys
UNIVERSAL (3pm)      - base class for ALL classes (blessed references)
unlink (2)           - delete a name and possibly the file it refers to
xdr_reference (3)    - library routines for external data representation
xset (1)             - user preference utility for X