{:sum; ... :}
==================
Output the sum.
```html
{:sum; /literal/literal/ :}
```
Any delimiter can be used:
```html
{:sum; ~a~b~ :}
{:sum; #a#b# :}
{:sum; |a|b| :}
{:sum; XaXbX :}
...
```
Modifiers:
----------
```text
{:^sum; ... :}
```
### Modifier: ^ (upline)
Eliminates previous whitespaces, (See "unprintable" for examples.)
No flags
--------
---