Index: specs/links.lht
===================================================================
--- specs/links.lht	(nonexistent)
+++ specs/links.lht	(revision 17064)
@@ -0,0 +1,52 @@
+ha:link-list {
+	title=Collection of PCB related specifications
+	li:links {
+		ha:specctra {
+			desc = {specctra dsn format}
+			li:url {
+				{http://zh.myvnc.com/SOFT/WORKING_SOFT/SPECCTRA/CCT_CDS_BACKUPS/tools/SPECCTRA/help/spdlr.pdf}
+				{http://zh.myvnc.com/SOFT/WORKING_SOFT/SPECCTRA/CCT_CDS/TOOLS/SPECCTRA/help/spdlr/spdlr.pdf}
+			}
+		}
+		ha:ipc2221a {
+			desc = {IPC-2221 Generic Standard on Printed Board Design}
+			li:url {
+				{http://www.sphere.bc.ca/class/downloads/ipc_2221a-pcb%20standards.pdf}
+				{http://us.jetpcb.com/Cht/Document/ipc-2221all.pdf}
+			}
+		}
+		ha:ipc7351 {
+			desc = {IPC-7351 ; Generic Requirements for Surface Mount Design and Land Pattern Standard}
+			li:url {
+				{http://www.edatop.com/down/faq/pcb/pcb-hwrf-PCB-604.pdf}
+			}
+		}
+		ha:hpgl {
+			desc = {The HP-GL/2 and HP RTL; Reference Guide; A Handbook for Program Developers}
+			li:url {
+				{www.hpmuseum.net/document.php?catfile=213}
+				{ftp.icm.edu.pl/packages/lprng/RESOURCES/HPLanguages.pdf}
+			}
+		}
+		ha:gerber {
+			desc = {Gerber RS-274X Format}
+			li:url {
+				{http://d1.amobbs.com/bbs_upload782111/files_11/ourdev_450330.pdf}
+			}
+		}
+		ha:dxf {
+			desc = {dxf format reference}
+			li:url {
+				{https://atrey.karlin.mff.cuni.cz/projekty/vrr/doc/dxf14.pdf}
+				{http://www.landesvermessung.sachsen.de/content/acad_dxf0.pdf}
+			}
+		}
+		ha:ipc782a {
+			desc = {IPC-SM-782A - Surface Mount Design and Land Pattern Standard}
+			li:url {
+				{https://www.pcb-3d.com/wordpress/wp-content/uploads/ipc-sm-782a_amendment_1_and_2.pdf}
+				{http://www.tortai-tech.com/upload/download/2011102023233369053.pdf}
+			}
+		}
+	}
+}
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