STRING data type methods

Table 1. Object methods
Name	Description
`append( str STRING ) RETURNS STRING`	Concatenates a string.
`equals( str STRING ) RETURNS BOOLEAN`	Compares a string to the content of a string variable.
`equalsIgnoreCase( str STRING ) RETURNS BOOLEAN`	Makes a case-insensitive string comparison.
`getCharAt( index INTEGER ) RETURNS CHAR(1)`	Returns the character at the specified position.
`getIndexOf( str STRING, startIndex INTEGER ) RETURNS INTEGER`	Returns the position of a substring.
`getLength( ) RETURNS INTEGER`	Returns the length of the current string.
`subString( startIndex INTEGER, endIndex INTEGER ) RETURNS STRING`	Returns a substring from start and end positions in a given string.
`toLowerCase( ) RETURNS STRING`	Returns the string converted to lower case.
`toUpperCase( ) RETURNS STRING`	Returns the string converted to upper case.
`trim( ) RETURNS STRING`	Removes leading and trailing blank space (ASCII 32) characters.
`trimWhiteSpace( ) RETURNS STRING`	Removes leading and trailing whitespace characters.
`trimLeft( ) RETURNS STRING`	Removes leading blank space (ASCII 32) characters.
`trimLeftWhiteSpace( ) RETURNS STRING`	Removes leading whitespace characters.
`trimRight( ) RETURNS STRING`	Removes trailing blank space (ASCII 32) characters.
`trimRightWhiteSpace( ) RETURNS STRING`	Removes trailing whitespace characters.