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    if ( it is equal ) {
   do something;
...
elsif ( it is equal or close ) {
   do something else;
}
  2. or download this
    if ( it is equal ) {
   do something;
...
if ( it is equal or close ) {
   do something else;
}
  3. or download this
    if ( it is equal or close ) {
   if ( it is equal ) {
...

   do something else;
}