Help System (web edition)

Error control in sucros:
Errors in applications using various Survo operations may have harmful
consequences in sucros.
For example, a sucro may try to operate on a non-existent data file
suggested by the user.
To overcome such failures, an automatic error recovery scheme has been
added. Whenever an error occurs, Survo gives an error message and
prompts to press any key). Such messages will be omitted in sucros.
Instead of an interrupt, the current contents of the sucro memory will
be replaced by
  ERR@<error_no.>@<name_of_operation>@<error_message> 
and a special error handler SURVOERR.TUT (in <Survo>\S) is called to display
the error message on the bottom line and the current job is terminated.
In any sucro application, this error handler sucro can be replaced
by another, possibly giving a chance for the user to correct his/her
actions before trying again. To override the default error handler
sucro (SURVOERR), give the code word {error handler <name_of_sucro>}
and your own routine will take the responsibility for the consequences.

In the current Survo version, only a limited set of Survo
operations is employing the new error recovery scheme.
Such operations are FILE SHOW,CORR,LINREG,FACTA.

  S = More information on sucros