.HL 1 Case information 
.INDEX Case information 
.note 
The following section explains how to change the case of the input text. 
If your terminal has a shift key you, do not need to read this section. 
.end note 
Case is specified by the the circumflex (_^) and the back-slash (_\)
characters. The appearance of a
circumflex causes the letter immediately following to be transmitted in upper
case.  The appearance of a back-slash causes the letter immediately following
to be converted to lower case.  Any letter not preceded by one of these
characters is transmitted in the current mode.  The mode is initially upper
case, and is changed by the occurance of two successive case control
characters.  Two circumflexes (_^_^) cause the mode to be set to upper case,
and two back-slashes (_\_\) cause the mode to be set to lower case. 
.p
When the text is in upper case mode (_^_^), the text is printed exactly as
typed, i.e., no case conversion occurs.  If in lower case mode (_\_\),
however, all text is converted to lower case except where explicitly
specified as upper case by a single upper shift character (_^). 
.p 
The following example illustrates the use of the case control characters: 
.skip 1 
H_\_\ERE IS A _^SAMPLE _^SENTENCE IN _^_^UPPER CASE_\_\ AND 
LOWER CASE. 
.skip 1 
becomes: 
.skip 1 
Here is a Sample Sentence in UPPER CASE and lower case. 
.p 
If the .FLAGS CAPITALIZE comand has been issued, the capitalization
flag, less-than (_<), is enabled, and any word it precedes will be
capitalized.  After the word, the case mode returns to its previous value.
If the capitalization character is enabled, a whole section of text can
be capitalized by inserting _^_< in front of the text and _^_^ 
after the text.  As with the lower case lock, a single character can be
forced to lower case rather than upper case by preceding it with (_\). 
.s 
These case change control symbols always override the actual case of the 
input text and the implied case of a command.  For example, the 
command .HEADER LEVEL would normally produce a capitalized title for 
level number 1.  This can be changed by preceding the title with _\_\ 
to force it to lower case.