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PI(1)											    PI(1)

       pi - Pascal interpreter code translator

       pi [ -blnpstuwz ] [ -i name ...	] name.p

       Pi  translates  the program in the file name.p leaving interpreter code in the file obj in
       the current directory.  The interpreter code can be executed using px.  Pix  performs  the
       functions of pi and px for `load and go' Pascal.

       The  following  flags are interpreted by pi; the associated options can also be controlled
       in comments within the program as described in the Berkeley Pascal User's Manual.

       -b    Block buffer the file output.

       -i    Enable the listing for any specified procedures and functions and	while  processing
	     any specified include files.

       -l    Make a program listing during translation.

       -n    Begin each listed include file on a new page with a banner line.

       -p    Suppress  the post-mortem control flow backtrace if an error occurs; suppress state-
	     ment limit counting.

       -s    Accept standard Pascal only; non-standard constructs cause warning diagnostics.

       -t    Suppress runtime tests of subrange variables and treat  assert  statements  as  com-

       -u    Card image mode; only the first 72 characters of input lines are used.

       -w    Suppress warning diagnostics.

       -z    Allow  execution  profiling with pxp by generating statement counters, and arranging
	     for the creation of the profile data file pmon.out when the resulting object is exe-

       file.p		   input file
       file.i		   include file(s)
       /usr/share/pascal/pi_stringstext of the error messages
       /usr/share/pascal/how_pi*basic usage explanation
       obj		   interpreter code output

       Berkeley Pascal User's Manual
       pcc(1), pix(1), px(1), pxp(1), pxref(1)

       For a basic explanation do


       In the diagnostic output of the translator, lines containing syntax errors are listed with
       a flag indicating the point of error.  Diagnostic messages indicate the action  which  the
       recovery  mechanism  took in order to be able to continue parsing.  Some diagnostics indi-
       cate only that the input is `malformed.'  This occurs if the recovery can find  no  simple
       correction to make the input syntactically valid.

       Semantic  error	diagnostics  indicate  a line in the source text near the point of error.
       Some errors evoke more than one diagnostic to help pinpoint the error; the follow-up  mes-
       sages begin with an ellipsis `...'.

       The first character of each error message indicates its class:

			EFatal error; no code will be generated.
			eNon-fatal error.
			wWarning - a potential problem.
			sNon-standard Pascal construct warning.

       If  a  severe  error  occurs which inhibits further processing, the translator will give a
       diagnostic and then `QUIT'.

       Charles B. Haley, William N. Joy, and Ken Thompson

       Formal parameters which are procedures and functions are not supported.

       The keyword packed and the function dispose are recognized but have no effect.

       For clarity, semantic errors should be flagged at an appropriate place in the source text,
       and  multiple  instances of the `same' semantic error should be summarized at the end of a
       procedure or function rather than evoking many diagnostics.

       When include files are present, diagnostics relating to the last procedure in one file may
       appear after the beginning of the listing of the next.

3rd Berkeley Distribution								    PI(1)
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