Terminal is what is known as an X terminal emulator, often referred to as terminal or shell. It provides an equivalent to the old fashioned text screen on your desktop, but on which can easily the screen with other graphical applications.

Terminal emulates the xterm application developed by the X Consortium. In turn, the xterm applications emulates the DEC VT102 terminal and also supports the DEC VT220 escape sequences. An escape sequence is a series of characters that with the Esc character. Terminal accepts all of the escape sequences that the VT102 and VT220 terminals use for functions such as to position the cursor and to clear the screen.

--help

Print a help screen and exit.

--version

Output version information and exit.

XDG_CONFIG_HOME

Specifies the root for all user-specific configuration files. If this environment variable is unset, it defaults to ~/.config/

XDG_CONFIG_DIRS

Set of preference ordered base directories relative to which configuration files should be searched in addition to the $XDG_CONFIG_HOME base directory. The directories should be separated with a colon.

XDG_DATA_HOME

Specifies the root for all user-specific data files. If this environment variables is unset, it defaults to ~/.local/share/

XDG_DATA_DIRS

Set of preference ordered base directories relative to which data files should be searched in addition to the $XDG_DATA_HOME base directory. The directories should be separated with a colon.