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ife
format:           
#ifexist
{var_name} {command-1}
                    
#ifexist
{var_name} {command-1} else {command2}
This checks if the variable named "var_name" exists.
Example:        
#ifexist
{food} {eat $food} else {eat bread}
                    
#ife
{leader} {say My leader is $leader!} else {say I have no leader!}
See also:
#if
,
#ifmatch
,
#variable
,
#unvariable