Here are links to the following pertinent documents that relate to that travel hold thing imposed against the Philippine Science High School graduates of Davao City.
PSHS-SMC Sample Contract
Bureau of Immmigration Watchlist for Batches 1992-1996
PSHS Main Memo # 4
PSHS-SMC Letter to Bureau of Immigration
PSHS-SMC Reply to the Petition Letter
And again, here is the link to the online protest letter made by the alumni together with the signature form for the signature campaign....