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The POPLOG run-time system includes a large number of built-in "system variables", which define and control many aspects of its behaviour. Many, but not all, of these variables have names starting with the prefix "pop", hence the name of this file.
This file lists most of these variables, except for those that control the VED editor. These are documented in REF * VEDVARS.
To find out more about any of these variables, use one of the following commands:
<ENTER> ?? <name> (extracts description from REF file) <ENTER> ref <name> (edits description in REF file)
(see HELP * QUERY and HELP * REF, respectively).
Also, the name of the relevant REF (or HELP) file is listed alongside each variable name.
CONTENTS - (Use <ENTER> g to access required sections)
These variables hold information about the current version and invocation of POPLOG.
pop_system_version REF * SYSTEM popversion REF * SYSTEM popheader REF * SYSTEM
poparg0 REF * SYSTEM poparglist REF * SYSTEM poparglist0 REF * SYSTEM pop_nobanner REF * SYSTEM pop_noinit REF * SYSTEM pop_runtime REF * SYSTEM pop_runtime_actions REF * SYSTEM popunderx REF * SYSTEM popdirectory REF * SYSUTIL popenvlist REF * SYSUTIL poppid REF * SYSUTIL popusername REF * SYSUTIL
pop_after_restore REF * SYSTEM pop_exit_ok REF * SYSTEM pop_first_setpop REF * SYSTEM popexit REF * SYSTEM syssetup REF * SYSTEM sysxsetup REF * SYSTEM xpopexit REF * X
These variables control POPLOG's interface to the operating system.
current_directory REF * SYSUTIL pop_file_mode REF * SYSIO pop_file_versions REF * SYSIO pop_file_write_error REF * SYSIO pop_max_filename_len REF * SYSUTIL pop_status REF * SYSUTIL
These variables control POPLOG's memory allocation and garbage collection mechanisms.
pop_after_gc REF * SYSTEM pop_callstack_lim REF * PROCEDURE pop_gc_copy REF * SYSTEM pop_gc_use_vadvise (not documented) pop_prolog_lim REF * PROLOG pop_prolog_size REF * PROLOG pop_record_writeable REF * SYSTEM popgcratio REF * SYSTEM popgctime REF * SYSTEM popgctrace REF * SYSTEM popmemlim REF * SYSTEM popmemused REF * SYSTEM popminmemlim REF * SYSTEM
These variables control POPLOG's signal handling and timer mechanisms.
interrupt REF * SYSTEM io_interrupt REF * SYSTEM pop_enable_interrupts REF * SIGNALS pop_timeout REF * SYSIO popsuspend REF * SIGNALS sys_max_signal REF * SIGNALS pop_ast_queue REF * ASYNC pop_asts_enabled REF * ASYNC timer_interrupt REF * TIMES
These variables control the "subsystem" mechanism.
pop_default_type REF * CHARIO pop_setpop_compiler REF * SYSTEM popsetpop REF * SYSTEM subsystem REF * SUBSYSTEM sys_subsystem_table REF * SUBSYSTEM
These variables affect POPLOG's numeric processing routines.
pop_float_radix REF * NUMBERS pop_reduce_ratios REF * NUMBERS popdprecision REF * NUMBERS popradians REF * NUMBERS ranseed REF * NUMBERS
These variables may be used to re-direct or modify POPLOG's low-level character I/O facilities.
cucharerr REF * CHARIO cucharin REF * POPCOMPILE cucharout REF * CHARIO cuchartrace REF * CHARIO handlepopescape (not documented) pop_buffer_charout REF * CHARIO pop_charerr_col REF * CHARIO pop_charerr_device REF * SYSIO pop_charin_device REF * SYSIO pop_charin_escapes REF * CHARIO pop_chario_trap REF * CHARIO pop_charout_col REF * CHARIO pop_charout_device REF * SYSIO pop_iso_latin REF * STRINGS pop_null_device REF * SYSIO pop_timeout_secs REF * SYSIO popdeverr REF * SYSIO popdevin REF * SYSIO popdevout REF * SYSIO poplinemax REF * CHARIO poplinewidth REF * CHARIO poplogfile REF * CHARIO popprompt REF * SYSIO poprawdevin REF * SYSIO poprawdevout REF * SYSIO rawcharin REF * CHARIO rawcharout REF * CHARIO rawsubstringout REF * CHARIO
These variables control the format in which data items are read and printed.
pop_longstrings REF * ITEMISE popnewline REF * ITEMISE
pop_=>_flag REF * PRINT pop_pr_exponent REF * PRINT pop_pr_level REF * PRINT pop_pr_places REF * PRINT pop_pr_quotes REF * PRINT pop_pr_radix REF * PRINT pop_pr_ratios REF * PRINT pr REF * PRINT
These variables influence POPLOG's library mechanisms.
pop_autoload REF * LIBRARY prautoloadwarn REF * LIBRARY
popincludelist REF * PROGLIST popautolist REF * LIBRARY popuseslist REF * LIBRARY
popdisk REF * LIBRARY popdatalib REF * LIBRARY poplibdir REF * LIBRARY popliblibdir REF * LIBRARY popsunlib REF * LIBRARY
These variables control various aspects of the POPLOG VM ("virtual machine").
dlocal_context REF * VMCODE dlocal_process REF * VMCODE pop_debugging REF * VMCODE pop_new_lvar_list REF * VMCODE pop_pas_mode REF * VMCODE pop_syntax_only REF * VMCODE pop_vm_compiling_list REF * VMCODE pop_vm_dummy_idents REF * VMCODE pop_vm_exec_apply REF * VMCODE pop_vm_flags REF * VMCODE popexecute REF * VMCODE set_pop_pas_mode REF * VMCODE sysAND REF * VMCODE sysCALL REF * VMCODE sysCALLQ REF * VMCODE sysCALLS REF * VMCODE sysCOMPILE REF * VMCODE sysCONSTANT REF * VMCODE sysDLABEL REF * VMCODE sysDLVARS REF * VMCODE sysENDLBLOCK REF * VMCODE sysENDPROCEDURE REF * VMCODE sysERASE REF * VMCODE sysEXECUTE REF * VMCODE sysEXEC_COMPILE REF * VMCODE sysEXEC_OPTION_COMPILE REF * VMCODE sysFIELD REF * VMCODE sysGLOBAL REF * VMCODE sysGOTO REF * VMCODE sysGO_ON REF * VMCODE sysIDENT REF * VMCODE sysIFNOT REF * VMCODE sysIFSO REF * VMCODE sysLABEL REF * VMCODE sysLBLOCK REF * VMCODE sysLCONSTANT REF * VMCODE sysLOCAL REF * VMCODE sysLVARS REF * VMCODE sysNEW_LABEL REF * VMCODE sysNEW_LVAR REF * VMCODE sysOR REF * VMCODE sysPASSIGN REF * VMCODE sysPLOG_ARG_PUSH REF * PROLOG sysPLOG_IFNOT_ATOM REF * PROLOG sysPLOG_RESTART REF * PROLOG sysPLOG_RESTORE REF * PROLOG sysPLOG_SAVE REF * PROLOG sysPLOG_TERM_SWITCH REF * PROLOG sysPOP REF * VMCODE sysPROCEDURE REF * VMCODE sysPUSH REF * VMCODE sysPUSHQ REF * VMCODE sysPUSHS REF * VMCODE sysSWAP REF * VMCODE sysSYNTAX REF * VMCODE sysUCALL REF * VMCODE sysUCALLQ REF * VMCODE sysUCALLS REF * VMCODE sysUFIELD REF * VMCODE sysUPASSIGN REF * VMCODE sysVARS REF * VMCODE sysdeclare REF * VMCODE
These variables hold information about the current state of the POP-11 compiler.
current_section REF * SECTIONS define_headers REF * SYNTAX define_terminators REF * SYNTAX loadcompiler REF * POPCOMPILE loadwarning REF * POPCOMPILE pop11_convert_weakref (not documented) pop11_define_declare REF * POPCOMPILE pop11_define_props REF * POPCOMPILE pop11_testdef_code (not documented) pop11_vars_default_check REF * POPCOMPILE pop_#_include_stack REF * PROGLIST pop_default_section REF * SECTIONS pop_expr_inst REF * POPCOMPILE pop_expr_item REF * POPCOMPILE pop_expr_prec REF * POPCOMPILE pop_expr_update REF * POPCOMPILE pop_pop11_flags REF * POPCOMPILE popclosebracket REF * POPCOMPILE popclosebracket_exec REF * POPCOMPILE popfilename REF * MISHAPS poplastchar REF * CHARIO poplastitem REF * PROGLIST poplinenum REF * CHARIO proglist REF * PROGLIST proglist_macro_pair REF * PROGLIST proglist_state REF * PROGLIST
These variables modify the behaviour of POPLOG's error handler, and various other debugging tools.
pop_default_prmishap REF * MISHAPS pop_mishap_doing_lim REF * MISHAPS popmessages REF * MISHAPS popmishaps REF * MISHAPS popsyscall REF * MISHAPS popwarnings REF * MISHAPS prmishap REF * MISHAPS prwarning REF * MISHAPS
pop_chain_trace HELP * TRACE pop_process_trace HELP * TRACE popmaxtraceindent HELP * TRACE poptraceindent HELP * TRACE systrace_pr HELP * TRACE systrace_proc HELP * TRACE tracing HELP * TRACE
Some miscellaneous variables.
database HELP * DATABASE doctypelist REF * DOCUMENTATION member REF * LISTS pop_current_process REF * PROCESS pop_hash_lim REF * PROPS pop_readline_prompt REF * PROGLIST poparray_by_row REF * ARRAYS popmatchvars HELP * POPMATCHVARS readline REF * PROGLIST sys_destroy_dependent REF * PROPS termcap_name REF * SYSUTIL (Unix only)
--- C.all/help/popvars --- Copyright University of Sussex 1991. All rights reserved. ----------