\Bbb - Used to draw blackboard-bold for uppercase letters and lowercase letters. If lowercase blackboard-bold letters are not available, then they are typeset in a roman font.

SYNOPSIS

{ \Bbb #1 }

DESCRIPTION

\Bbb command is used to draw blackboard-bold letters. Lower-case letters are displayed in blackboard-bold, or not, depends on the fonts being used. The MathJax web-based fonts don't have lowercase blackboard-bold, but the STIX fonts do; so users with the STIX fonts installed will be able to display lowercase blackboard-bold letters.

OPTIONS

Input	Description
#1	Parameter

EXAMPLE

```
\Bbb R 
```
$ \Bbb R $
```
\Bbb ZR 
```
$ \Bbb ZR $
```
\Bbb{AaBbKk}Cc 
```
$ \Bbb{AaBbKk}Cc $
```
\Bbb{ABCDEFGHIJKLMNOPQRSTUVWXYZ} 
```
$ \Bbb{ABCDEFGHIJKLMNOPQRSTUVWXYZ} $