Variable: VAR [...] Constant Variable A [...] variable in the VAR

Variable [...] variables are declared [...] in the persistent global variable

Variable: RETAIN Retain variables [...] Only the variable is located

Variables Caution [...] Writing of variables [...] Forcing of variables

Variables The scope of a variable [...] how and where you can use a variable

Variable: VAR_INPUT Input variables [...] _INPUT variables between the VAR

Variable: VAR_OUTPUT Output variables [...] _OUTPUT variables between the VAR

Variable: VAR [...] _IN_OUT variable is an input/output variable, which is part

Variable: VAR [...] variable [...] variable

For variables [...] , you should name variables [...] for each variable as a base name