Scope and inheritance
=====================
By default the scope of the definitions is block inheritable to the children of the block:
```html
{:code; <--------------------------.
{:* block *:} |<---- Block
{:param; name >> value :} <----|----- Set "name" for this block and its children
{:param; name :} <-------------|----- "name" has the value "value".
{:code; |
{:* child block *:} |
{:param; name :} <---------|----- "name" has the value "value".
:} |
:} <-------------------------------ยท
{:param; name :} <----------------------- outside block, no value or a previous value if any.
```
"include" has a block scope, then:
```html
{:code;
{:* include for set "snippet-name" *:}
{:include; snippet.ntpl :}
{:snippet; snippet-name :} {:* Ok, "snippet-name" is set *:}
:}
{:snippet; snippet-name :} {:* Ko, "snippet-name" is not set *:}
```
The modifier scope (+) adds the scope to the current level
```html
{:+code;
{:* include for set "snippet-name" *:}
{:include; snippet.ntpl :}
{:snippet; snippet-name :} {:* Ok, "snippet-name" is set *:}
:}
{:snippet; snippet-name :} {:* Ok, "snippet-name" is set *:}
```
To make it possible to do this:
```html
{:bool; something >>
{:include; snippet.ntpl :}
:}
{:snippet; snippet-name :} {:* Ko, "snippet-name" is not set *:}
{:+bool; something >>
{:include; snippet.ntpl :}
:}
{:snippet; snippet-name :} {:* Ok, "snippet-name" is set *:}
```
---
