Tcl_LimitAddHandler, Tcl_LimitCheck, Tcl_LimitExceeded, Tcl_LimitGetCommands, Tcl_LimitGetGranularity, Tcl_LimitGetTime, Tcl_LimitReady, Tcl_LimitRemoveHandler, Tcl_LimitSetCommands, Tcl_LimitSetGranularity, Tcl_LimitSetTime, Tcl_LimitTypeEnabled, Tcl_LimitTypeExceeded, Tcl_LimitTypeReset, Tcl_LimitTypeSet − manage and check resource limits on interpreters
Module::Build::Platform::os2 − Builder class for OS/2 platform
creal, crealf, creall − get real part of a complex number
canonicalize_file_name − return the canonicalized absolute pathname
LWP::Simple − simple procedural interface to LWP
Tcl_AppendExportList, Tcl_CreateNamespace, Tcl_DeleteNamespace, Tcl_Export, Tcl_FindCommand, Tcl_FindNamespace, Tcl_ForgetImport, Tcl_GetCurrentNamespace, Tcl_GetGlobalNamespace, Tcl_GetNamespaceUnknownHandler, Tcl_Import, Tcl_SetNamespaceUnknownHandler − manipulate namespaces
Getopt::Long::Descriptive − Getopt::Long, but simpler and more powerful
Tcl_CallWhenDeleted, Tcl_DontCallWhenDeleted − Arrange for callback when interpreter is deleted
MIME::Field::ParamVal − subclass of Mail::Field, for structured MIME fields
fpathconf, pathconf − get configuration values for files