diff --git a/README.rf b/README.rf
index 5b517669c..7e21117f2 100644
--- a/README.rf
+++ b/README.rf
@@ -4,3 +4,59 @@ some have been slightly modified, compatibility with VS 2022 is achieved.
 
 PSS and HB have been tested on a few examples. Documentaion and further testing are due, as well as finally adding
 suitable commit messages.
+
+Commands available:
+
+
+Writing two-port or multi(N)-port S parameters
+spar_write() (2-port) or spar_write_np() (N-port)
+
+Periodic steady state (PSS)
+pss <Fguess> <StabTime> <OscNoB> <Points> <Harmonics> <Sc_iter> <Steady_Coeff> 
+
+Periodic AC (PAC)
+pac <Fguess> <StabTime> <OscNoB> <Points> <Harmonics> <Sc_iter> <Steady_Coeff>  <DEC/OCT/LIN> <Npoints> <fstart> <fstop>
+
+PNOISE
+pnoise <Fguess> <StabTime> <OscNoB> <Points> <Harmonics> <Sc_iter> <Steady_Coeff> <Outnode> <InSrc> <DEC/OCT/LIN> <Npoints> <fstart> <fstop>
+
+Periodic transfer function (PXF)
+pxf <Fguess> <StabTime> <OscNoB> <Points> <Harmonics> <Sc_iter> <Steady_Coeff> <Outnode> <InSrc> <DEC/OCT/LIN> <Npoints> <fstart> <fstop> [max sideband]
+
+Cyclostationary noise
+pnoise <Fguess> <StabTime> <OscNoB> <Points> <Harmonics> <Sc_iter> <Steady_Coeff> <Outnode> <InSrc> <DEC/OCT/LIN> <Npoints> <fstart> <fstop> cyclo
+
+Periodic S parameters
+psp <Fguess> <StabTime> <OscNoB> <Points> <Harmonics> <Sc_iter> <Steady_Coeff> <Outnode> <InSrc> <DEC/OCT/LIN> <Npoints> <fstart> <fstop> [max sideband]
+
+Quasi-periodic two-tone steady state (QPSS)
+qpss <expr> <f1> <f2> [periods] [max order]
+     | e.g. V(out)
+
+Harmonic Balance (HB)
+hb <Fguess> <Harmonics> [points] [maxiter]
+
+Two-tone HB (frequency domain QPSS)
+qpss <expr> <f1> <f2> hb <k1> <k2>
+
+Two-tone small-signal QPAC (quasi periodic AC)
+qpss <expr> <f1> <f2> hb <k1> <k2>
+qpac <f_in>
+
+Two-tone small-signal Qnoise (quasi periodic noise)
+qpss <expr> <f1> <f2> hb <k1> <k2>
+qnoise <output node> <f_in>
+
+Cyclo stationary QPNOISE
+qnoise <output node> <f_in> cyclo
+
+Oscillator phase noise (autonomous HB plus phase noise)
+hbosc <oscnob> <k> 
+
+Two-tone small-signal quasi-periodic transfer function QPXF
+qpss <expr> <f1> <f2> hb <k1> <k2>
+qpxf <output node> <f_in>
+
+QPAC, QPnoise, and QPXF may be swept over frequency instead of fixed f_in, e.g.
+replace 'qpxf <output node> <f_in>' by 'qpxf <output node> <dec/oct/lin> <Npo> <fstart> <fstop>'
+