To run SNAPIN:
SNAPIN is organized as a set of hierarchical menus. To select an item in a menu, you can type either the number which appears just to its left, or you can type the first few characters of the menu item itself. You will probably find it more convenient to make selections with characters. Often a single character is enough, sometimes 2, 3, or 4 are required to provide uniqueness. The menu usually indicates unique character prefixes in uppercase. The main menu in SNAPIN is:
<0=MO> Option for SHOT 58505 @ 3.400 s? <Sh>: \* Options are: 1) Read a SNAP input file 2) Shot, time, dt INVALID 3) Physics controls VALID 4) Model for Ti VALID 5) Magnetics VALID 6) Ne VALID 7) Te VALID 8) Ti VALID 9) Vphi VALID 10) Prad VALID 11) Zeff VALID 12) Xi (Chii) VALID 13) Beams VALID 14) RF heating VALID 15) Impurities VALID 16) Comments VALID 17) Write a SNAP input file 18) List old update messages 19) Find sources? 20) Autosnap? <0=MO> Option for SHOT 58505 @ 3.400 s? <Sh>: ,
Generally you will visit the major submenus (Shot, time, dt
through Impurities) in the order indicated. When you are
finished with a particular menu and wish to return to a higher menu
level, enter semicolon (
;). If you have changed the shot number
since last reading a SNAP input file, SNAPIN will force you to
visit all of the major submenus. In this case, typing semicolon will
advance you to the next major submenu item.
Whenever you enter a menu, its options are displayed and you are
prompted for the option you want. If you want to see the menu again,
RETURN at the menu prompt.
Important: If you enter backslash,
\, you will usually
back-up to the previous question. This is sometimes useful if you
select an option by mistake. When leaving menus, both
\ will work, however there is a difference between these
two commands in SNAPIN. The
; causes some consistency
checking and some SNAP parameters to be set on the way out of a
\ does not! When leaving menus in SNAPIN use
;. If you are confused about whether
; is required,
look at the beginning of the prompt--there will be a
; in it,
e.g., <2=T;> Set time of analysis is a menu prompt and requires
; to leave that menu.
When you enter >file.com as the response to any prompt, where
file.com is a file name of your choice, your responses will be
written into that file until you type
> or until you leave the
^z. You can then invoke this command
procedure in a subsequent SNAPIN session, by typing @file.com
in response to the same prompt where you started writing the command
SNAPIN uses the TK-UREAD user interface (also used by LOCUS)--a summary of its commands is given in Table 1. Additional capabilities which allow you to pass variable names, etc., are described in the UREAD documentation.
Table 1: Summary of the TK-UREAD User Interface Commands
The following sections describe the major submenus.