options(8) - phpMan

BF_options (3ssl)    - Blowfish encryption
cpupower-idle-set (1) - Utility to set cpu idle state specific kernel options
dhcp-options (5)     - Dynamic Host Configuration Protocol options
dracut.cmdline (7)   - dracut kernel command line options
dracut.kernel (7)    - dracut kernel command line options
ExtUtils::Mksymlists (3pm) - write linker options files for dynamic extension
fcntl.h (0p)         - file control options
getopt (1)           - parse command options (enhanced)
getopt (3)           - Parse command-line options
Getopt::Long (3pm)   - Extended processing of command line options
getopt_long (3)      - Parse command-line options
getopt_long_only (3) - Parse command-line options
getopts (1p)         - parse utility options
getsockopt (2)       - get and set options on sockets
getsockopt (3p)      - get the socket options
git-config (1)       - Get and set repository or global options
my_print_defaults (1) - display options from option files
odbc_config (1)      - get compile options for compiling unixODBC client
optarg (3)           - Parse command-line options
optarg (3p)          - options parsing variables
opterr (3)           - Parse command-line options
optind (3)           - Parse command-line options
optopt (3)           - Parse command-line options
pcre2_set_compile_extra_options (3) - Perl-compatible regular expressions (re...
posixoptions (7)     - optional parts of the POSIX standard
rpm-misc (8)         - lesser need options for rpm(8)
set (1p)             - set or unset options and positional parameters
setsockopt (2)       - get and set options on sockets
setsockopt (3p)      - set the socket options
SSL_clear_options (3ssl) - manipulate SSL options
SSL_CTX_clear_options (3ssl) - manipulate SSL options
SSL_CTX_get_options (3ssl) - manipulate SSL options
SSL_CTX_set_options (3ssl) - manipulate SSL options
SSL_get_options (3ssl) - manipulate SSL options
SSL_get_secure_renegotiation_support (3ssl) - manipulate SSL options
SSL_set_options (3ssl) - manipulate SSL options
stty (1p)            - set the options for a terminal
vfychain (1)         - vfychain [options] [revocation options] certfile [[opt...
xfs (5)              - layout, mount options, and supported file attributes f...