This process was sometimes called linkage editing and the output known as a load module. A compiler works with what are sometimes called 3GL and higher-level languages. An assembler works on programs written using a processor's assembler language.
In general, however, when between vowels (as in exactamente) the Spanish x is pronounced like the English ks sound but softer or less explosive. When it comes before another consonant (as in expediciÃ³n), it has the s sound in some regions/countries but the soft ks sound in others.
Beijing, China. Pronunciation: The problem with Xin is that the X sound does not exist in English. The closest way to mimic this sound is to pronounce a sh sound and lift the middle of your tongue such that it is closest to your hard palate. Then pronounce the -in as een.