#QUARKXPRESS 2018 KEY COMMANDS CODE#

Several commands are optionally argumentless. For example, HALT, CONTINUE, TRY, TSTART, and TCOMMIT are argumentless commands. There are a small number of commands that are always argumentless. A postconditional expression appended to the keyword is not considered an argument. Copy link to this section Argumentless CommandsД¬ommands that do not take an argument are referred to as argumentless commands.

#QUARKXPRESS 2018 KEY COMMANDS CODE#

VIEW X : y : z : a, B : a : y : z Copy code to clipboardДЇor a few commands ( DO, XECUTE, and GOTO), a colon following an argument specifies a postconditional expression that determines whether or not that argument should be executed. If a command takes one or more arguments, you must include exactly one space between the command keyword and the first argument. Copy link to this section Command ArgumentsДЇollowing a command keyword, there can be zero, one, or multiple arguments that specify the object(s) or the scope of the command. A /* comment */ multiline comment can be specified within a command as well as at the end of one. A blank space is required between the end of a command and comment syntax, with the exception of # and /* comment */ syntax. You can specify an in-line comment following a command, indicating that the rest of the command line is a comment. In ObjectScript no end-of-command or end-of-line delimiter is required or permitted. One or more commands may follow a label on the same line the label and the command are separated by one or more spaces. Multiple commands on a line are separated by one or more spaces. When issuing a command from the Terminal command line prompt, or from an XECUTE command, no indent is required (indent is permitted).ДЄn executable line of code can contain one or more commands, each with their own command keyword. In an ObjectScript program, the first command on a code line must be indented the command keyword cannot appear in column 1. It is therefore possible to use a command keyword as a user-assigned name for a variable, label, or other identifier. For a list of command abbreviations, see Table of Abbreviations in the CachГ© ObjectScript Reference.Д¬ommand keywords are not reserved words. Therefore, вЂњWRITEвЂќ, вЂњWriteвЂќ, вЂњwriteвЂќ, вЂњWвЂќ, and вЂњwвЂќ are all valid forms of the WRITE command. Most command names can be represented by an abbreviated form. ObjectScript command names are not case-sensitive. In this case, WRITE writes the string вЂњHelloвЂќ. The WRITE command does exactly what its name implies: it writes to the principal device whatever you specify as its argument. For example, to assign a value to a variable, you must specify the SET keyword, followed by the arguments for the variable and the value to be assigned.ДЄ command always begins with a keyword. In ObjectScript all command statements are explicit every executable line of ObjectScript code must begin with a command keyword. Copy link to this section Command Keywords These and many other ObjectScript commands are described in detail in the CachГ© ObjectScript Reference. This is not a complete list of ObjectScript commands. Input/Output commands - the four display (write) commands READ OPEN, USE, and CLOSE The chapter then briefly describes the following groups of ObjectScript commands:Д¬ommands governing variable assignment - SET, KILL, and NEWД¬ontext commands for the execution of other commands - TRY and CATCH error handling structure TSTART, TCOMMIT, and TROLLBACK transaction processing LOCK resource lockingД¬ommands that invoke code (and exit code) - DO, JOB, and XECUTE QUIT and RETURNДЇlow of control commands - IF, ELSEIF, and ELSE FOR WHILE and DO WHILE This chapter describes the following aspects of ObjectScript commands: Every command consists of a command keyword followed by (in most cases) one or more command arguments. All of the execution tasks in ObjectScript are performed by commands. The command is the basic unit of code in ObjectScript programming.

Quarkxpress 2018 key commands