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- control/break Exit the current loop.
- control/case Select code block to execute base on matching a string against a pattern.
- control/catch Trap errors while executing a command.
- control/continue Continue execution of the next iteration of a loop.
- control/error Return an error.
- control/errorCode Variable holding symbolic error information.
- control/errorInfo Variable holding stack trace of an error.
- control/eval Command to evaluate strings as Tcl code.
- control/exit Terminate the current process.
- control/for Loop control command.
- control/foreach Loop on each element of a list.
- control/if Conditional command execution based on evaluating an expression.
- control/proc Define a Tcl procedure.
- control/rename Rename or delete a command or procedure.
- control/return Exit the current procedure, optionally returning a value.
- control/source Read and evaluate a file of Tcl code.
- control/uplevel Execute a command in another environment up the procedure call stack.
- control/while Loop while an expression is true.
- files/close Close an open file or pipeline.
- files/eof Test for end-of-file.
- files/file Return status information about an file name, including parsing the name.
- files/flush Flush a file buffer.
- files/gets Read a line from a file.
- files/glob Perform file name globbing.
- files/open Open a file or pipeline.
- files/puts Write a string to a file.
- files/read Read bytes from a file.
- files/seek Change the access position of a file.
- files/tell Return the current access position of a file.
- intro/backslash Tcl backslash substitution.
- intro/braces Grouping arguments with braces.
- intro/brackets Command substitution with brackets.
- intro/built-in-vars Standard built-in Tcl variables.
- intro/comments Inserting comments in Tcl code.
- intro/data_types Tcl data types.
- intro/dollar Variable Substitution With $.
- intro/double_quotes Grouping arguments with double-quotes.
- intro/expressions Tcl expressions.
- intro/procedures Tcl procedures.
- intro/regexps Regular expressions.
- intro/results Results of a command execution.
- intro/semi-colons Separating commands with semi-colons.
- intro/syntax Basic Tcl command syntax.
- intro/variables Tcl variables and arrays.
- libraries/unknown Unknown command trap handler.
- lists/concat Concatenates lists into a single list.
- lists/join Join elements of a list into a string.
- lists/lappend Append elements to an array variable.
- lists/lindex Extract an element of a list.
- lists/linsert Insert an new element in a list.
- lists/list Generate a list.
- lists/llength Return the number of elements in a list.
- lists/lrange Extract a range of elements from a list.
- lists/lreplace Replace elements of a list.
- lists/lsearch Search a list for a pattern.
- lists/lsort Sort the elements of a list.
- lists/split Split a string into a list of elements.
- math/expr Evaluate an expression.
- math/incr Increment a variable.
- processes/exec Run a Unix process.
- status/cd Change the current working directory.
- status/history Redo or list previously executed interactive commands.
- status/info Provide state information on the Tcl interpreter.
- status/pwd Return the current working directory.
- strings/append Append strings to a variable.
- strings/format Generate a formated string using a format specification.
- strings/regexp Match a string against a regular expression.
- strings/regsub Match a string against a regular expression and perform substitution on it.
- strings/scan Parse a string based on a format specification.
- strings/string Perform operations on a string.
- time/time Return the execution time for a Tcl command.
- variables/array Return information about an array variable.
- variables/env Variable for accessing the program's environment.
- variables/global Declare a variable as global.
- variables/set Return or set the value of a variable.
- variables/trace Trace access to variables.
- variables/unset Delete a variable or array element.
- variables/upvar Bind a variable to another variable up the procedure call stack.
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