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Trigger 1.4 for OS X 10.4 or later

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Download Trigger 1.4 for OS X 10.4 or later: for Intel and PowerPC
Download the source for Trigger 1.4:  
New Features in version 1.4
map viewer for dt0, hgt and DEM formats
open and closed walks over square lattice
surface rendering for primary of orbital
save as bitmap file
inline manual
New Features in version 1.3.1
elliptic and parabolic orbits
New Features in version 1.2
multiple windows
annotation faciliity
opening, saving and printing
planetary orbitals
ballistic trajectories can be corrected for rotation of the primary
GPL license and fat binaries
New Features in version 1.1
A ballistic calculator for the elliptic case of the Keplerian 2 body problem, complete with fancy graphics.
Previous Features
A calculator to solve all 6 spherical triangle problems.
industrial-colored superimposed layers of sourcecode