Tcl_Eval (man3)
Tcl_EvalObjEx, Tcl_EvalFile, Tcl_EvalObjv, Tcl_Eval, Tcl_EvalEx, Tcl_GlobalEval, Tcl_GlobalEvalObj, Tcl_VarEval, Tcl_VarEvalVA − execute Tcl scripts
Tcl_EvalObjEx, Tcl_EvalFile, Tcl_EvalObjv, Tcl_Eval, Tcl_EvalEx, Tcl_GlobalEval, Tcl_GlobalEvalObj, Tcl_VarEval, Tcl_VarEvalVA − execute Tcl scripts
Tcl_ExprLong, Tcl_ExprDouble, Tcl_ExprBoolean, Tcl_ExprString − evaluate an expression
Tcl_SaveInterpState, Tcl_RestoreInterpState, Tcl_DiscardInterpState, Tcl_SaveResult, Tcl_RestoreResult, Tcl_DiscardResult − save and restore an interpreter’s state
MIME−tools − modules for parsing (and creating!) MIME entities
File::HomeDir::Darwin::Cocoa − Find your home and other directories on Darwin (OS X)
Tcl_GetReturnOptions, Tcl_SetReturnOptions, Tcl_AddErrorInfo, Tcl_AppendObjToErrorInfo, Tcl_AddObjErrorInfo, Tcl_SetObjErrorCode, Tcl_SetErrorCode, Tcl_SetErrorCodeVA, Tcl_SetErrorLine, Tcl_GetErrorLine, Tcl_PosixError, Tcl_LogCommandInfo − retrieve or record information about errors and other return options
File::HomeDir::Unix − Find your home and other directories on legacy Unix
MDK::Common::Math − miscellaneous math functions
Tcl_BackgroundException, Tcl_BackgroundError − report Tcl exception that occurred in background processing
fopencookie − opening a custom stream