if {![package vsatisfies [package provide Tcl] 8.4]} then { 
  error "need Tcl 8.4 or higher" 
} 
 
# 
# NOTE: This script file uses features that are not available in Eagle (e.g. 
#       the "http" and "tls" packages). 
# NOTE: This script file uses features that are not available or not needed 
#       in Eagle (e.g. the "http" and "tls" packages, etc). 
# 
if {[catch {package present Eagle}] == 0} then { 
  error "need native Tcl" 
}