##{py##
def block_init(data,value,**kw):
	data.update(
		{
			'booltrue'	: 1==1,
			'boolfalse'	: 1==2,
			'zero'		: 0,
			'nonzero'	: -1,
			'string'	: 'this is a string',
			'emptystring'	: '',
			'list'		: [1,2,3],
			'emptylist'	: [],
			'object'	: {'field':'field-value'},
		}
	)
####
##{js##
function block_init(data) {
	var test = (
		{
			'booltrue'	: 1==1,
			'boolfalse'	: 1==2,
			'zero'		: 0,
			'nonzero'	: -1,
			'string'	: 'this is a string',
			'emptystring'	: '',
			'list'		: [1,2,3],
			'emptylist'	: [],
			'object'	: {'field':'field-value'},
		}
	);
	for(var i in test) {
		data[i]=test[i];
	}
}
####
##>init##
Here, 'this is a string' without quotes is shown: ##string##
Just two quotes: '##nonexistent##'
Object field: ##object.field##
Non-existig object field: ##notexistent.field##
If true:
	##@booltrue##
		shown boolean true
	####
	##@nonzero##
		shown non-zero
	####
	##@list##
		shown non-empty list
	####
	##@string##
		shown non-empty string
	####
	##@boolfalse##
		NOT SHOWN (boolfalse)
	####
	##@zero##
		NOT SHOWN (zero)
	####
	##@emptylist##
		NOT SHOWN (emptylist)
	####
	##@emptystring##
		NOT SHOWN (emptystring)
	####
	##@nonexistent##
		NOT SHOWN (nonexistent)
	####
If false:
	##!booltrue##
		NOT SHOWN (booltrue)
	####
	##!nonzero##
		NOT SHOW (nonzero)
	####
	##!list##
		NOT SHOWN (list)
	####
	##!string##
		NOT SHOWN (string)
	####
	##!boolfalse##
		shown boolean false
	####
	##!zero##
		shown zero
	####
	##!emptylist##
		shown empty list
	####
	##!emptystring##
		shown empty string
	####
	##!nonexistent##
		shown non-existent
	####
Choice:
	##apple?string##
		NOT SHOWN
	##nut?##
		NOT SHOWN
	##?##
		NOT SHOWN
	##*##
		shown
	####
	##apple?emptystring##
		NOT SHOWN
	##nut?##
		NOT SHOWN
	##?##
		shown
	##*##
		NOT SHOWN
	####
	##apple?string##
		NOT SHOWN
	##nut?##
		NOT SHOWN
	##?##
		NOT SHOWN
	##this is a string?##
		shown
	##*##
		NOT SHOWN
	####
	##apple?nonzero##
		NOT SHOWN
	##nut?##
		NOT SHOWN
	##?##
		NOT SHOWN
	##-1?##
		shown
	##*##
		NOT SHOWN
	####
Iteration:
	##i:list##
		##i##
	####
	##i:emptylist##
		NOT SHOWN
	####
Block:
	##value=block##
		shown: ##value##
	####
	##i:list##
		##i>block##
	####
	##string>block##
	##nonexistent>block##
	##>block##
	##=repeat##
		shown
	####
	##>repeat##
Host language block:
##{py##
def block_example(data,value,output,getvalue,compare):
	data['changed']="changed in block"
	data['example_value']=value
	output(value)
	output(getvalue(data,value))
	output('equal' if compare(value,1) else 'different')
####
##{js##
function block_example(data,value,output,getvalue,compare) {
	data.changed="changed in block";
	data.example_value=value;
	output(value);
	output(getvalue(data,value));
	output(compare(value,1)?'equal':'different')
}
####
##string>example##
##{py##
def block_uppercase(data,value,output,getvalue,compare):
	output(value.upper());
####
##{js##
function block_uppercase(data,value,output) {
	output(value.toUpperCase());
}
####
	And now show in all caps: ##string>uppercase##
False beard:
	###string##

True beard
	##\####string##