Open a Turbo C shell, see the section called "The shell".
The T shell: a UNIX command shell similar to csh, but with more features.
Open a Turbo C shell, see Section 3.2.3.2.
TCSH is a command language interpreter. TCSH is used for an interactive login shell, and a shell script command processor.
the section called “Shell types
Unix shell based on and compatible with the C shell (csh). It is essentially the C shell with (programmable) filename completion, command-line editing, and a few other features.