File Operators And Standard Devices - Xerox DocuPrint Network Printer Series Guide Manual

POSTSCRIPT
Quantity
integer
real
array
dict
string
file
userdict
operand stack
dict stack
exec stack
interpreter level
save level
gsave level
path
dash
VM
systemdict
errordict

File operators and standard devices

2-24
Table 2-2.
Limit
31
Largest: 2 -1
31
Smallest: -2
38
Largest: 10
38
Smallest: -10
16
65536 or 2
16
65536 or 2
18
262144 or 2
See "File operators and standard devices" _
2000
5000
50
250
Variable
31
31
1500
See "Path limits"
65536
Approximately 4 megabytes
256
28
When "%stdin" is the filename for the file operator, DocuPrint NPS
does not create a new file object. For example, the following
PostScript segment uses %stdin to open a file:
(%stdin) (r) file % open a file for reading from the
stdin device.
DocuPrint NPS returns the file object for %stdin created at
initialization time, which is used for reading the PostScript master.
Therefore, PostScript masters should avoid doing a closefile on
%stdin because this action closes the file object that is used by the
PostScript interpreter to read the PostScript master.
Although the use of the operator file on %stdin is common, other
PostScript operators such as closefile are rarely used with the
standard devices. Likewise, miscellaneous file operators such as
XEROX DOCUPRINT NPS GUIDE TO USING PAGE DESCRIPTION LANGUAGES
Implementation limits
Description
_
Actual values are slightly less than 10
and slightly more than -10
Maximum length of an array
Maximum capacity of a dictionary (key
value pairs)
Maximum number of characters in a name
Capacity of UserDict
Maximum depth of the operand stack
Maximum depth of the dictionary stack
Maximum depth of the execution stack
Maximum number of recursive invocation
of the interpreter
Maximum number of active saves
Maximum number of active gsaves
_
Maximum elements in dash pattern
Maximum size of the virtual memory in
bytes
Maximum capacity of System Dict
Maximum capacity of Error Dict
38
38
.