The BTCL Language

• Table of Contents, for complete descriptions of all or some aspects of the BTCL language.
• How-To Index, to quickly access specific information on how to accomplish something.
• BTCL/TCL commands and utilities index, to find out more about specific BTCL/TCL commands and utilities.

Table of Contents

• Brief Introduction to BTCL/TCL
• General Programming Syntax:
  • Variables and Expressions
  • The expr and eval Commands
  • Control Statements
    • Conditional Statements: if, else, and elseif
    • Conditional Looping Statements: while, for, and foreach
  • Procedures
  • Commands and Utilities
  • Command Parameter Types
  • Global Variables and Environment Variables
• Format for Documenting Syntax

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Brief Introduction to BTCL/TCL

How-To Index

Structure Commands

• Continue a command to two or more lines
• End a command line
• Enter several commands on one line
• Include subcommands within a command
• Include subcommands that act at certain times
• Include comments in a command file
• Specify Discover BTCL commands
• Design your own procedures

  Control Program Flow

• Write conditional statements
• Exit a loop under certain conditions

• Specify Arguments

• Separate several command arguments
• Escape (quote) special characters

  Work with Variables

• Assign a value to a variable
• Assign a value to a variable, using an expression in place of the value
• Find the value of a variable
• Assign global variables
• Use predefined global variables
• Set a random number seed
• Set an environment variable
• Specify the run name (project name)
• Change default values of parameters
• Find the current default values of parameters or of a single parameter
• Reassign the original default values
• Set Boolean parameter values

  Evaluate Expressions

• Evaluate a mathematical expression

  Work with Arrays

• Specify arrays

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Advanced-Use access