USE

---- command in PHOTON (including Autoplot) ----

USE followed by the name of a file tells PHOTON to accept its next commands from the specified file rather than from the keyboard.
While the commands are being executed, no request for user action is displayed.

Additional commands which can be placed in a USE fil, for which there is no keyboard equivalent are:-

• the PAUSE command will cause the program to halt until RETURN is pressed;
• the UPAUSE n command will cause the program to halt for n seconds;
• * of a line
• any line having an asterisk as the first non-blank character will be ignored.
• the command MSG <text string> will display the text string;
• the PAUSE, UPAUSE and UREWIND commands permit control of the execution of the USE file;
• the UTEXT and UMAGNIFY commands provide non-interactive analogues of TEXT and MAGNIFY, in order to permit fully automatic operation of USE files.

NOTE that only one USE file may be in use at any one time, i.e. nesting of USE files is not allowed.

See also : UPAUSE, UREWIND, UTEXT, UMAGNIFY

USEGRD

---- Logical; default= T; group 19 -- -

USEGRD....the default setting, T, ensures access to the user portion of subroutine GROUND that follows the call to GREX. If the user has not inserted his own sequences in GROUND, the uneconomical repetition of the numerous control statements in GROUND can be prevented by setting USEGRD=F.

USEGRX

---- Logical; default= T; group 19 -- -

USEGRX....may be set to F to deactivate the call to subroutine GREX

USER

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Ground logical.

USER....to be set .TRUE. in group 8 section 14 of GROUND when USOLVE is .TRUE. to indicate that GROUND coding has been used to solve the linear equations of the current variable. See USOLVE and SLBSOL.

User-defined block corrections

(see ISOLBK, and IVARBK integer)

wbs