Basic Symbols
From UNLwiki
				| Symbol | Definition | Example | 
|---|---|---|
| ( ) | node | (%a) | 
| " " | string | "went" | 
| [ ] | natural language entry (headword) | [go] | 
| [[ ]] | UW | [[to go(icl>to move)]] | 
| // | regular expression | /a{2,3}/ = aa,aaa | 
| rel(x;y) | relation | agt(kill;Peter) | 
| ^ | not | ^a = not a | 
| { | } | or | {a|b} = a or b | 
| % | index for nodes, attributes and values | %x | 
| : | scope ID | :01 | 
| # | index for sub-NLWs | #01 | 
| = | attribute-value assignment | POS=NOU | 
| ! | rule trigger | !PLR | 
| & | merge operator | %x&%y | 
| ? | dictionary lookup operator | ?[a] |