R package FixSeqMTP. Fixed Sequence Multiple Testing Procedures. Generalized Fixed Sequence Multiple Testing Procedures (g-FSMTPs) are used to test a sequence of pre- ordered hypotheses. The proposed three Family-wise Error Rate (FWER) controlling g-FSMTPs utilize numbers of rejections and acceptances, all the procedures are designed under arbitrary dependence. The proposed two False Discovery Rate (FDR) controlling g-FSMTPs allows more but a given number of acceptances (k>=1), the procedures are designed for arbitrary dependence and independence. The main functions for each proposed g-FSMTPs are designed to calculate adjusted p-values and critical values, respectively. For users’ convenience, the output results also include the option of decision rules for convenience.