This paper presents a revised version of an implementation of the Momel and INTSINT algorithms for the automatic modelling and symbolic coding of intonation patterns. The algorithms are implemented as external functions (respectively a C program and a Perl script), which are seamlessly integrated into the Praat speech manipulation software by means of the recently proposed plugin facility for Praat. Pitch detection is carried out using a subroutine to calculate optimal values of maximum and minimum F0 automatically. The implementation of the Momel algorithm incorporates a greatly improved treatment of the modelling of pitch contours in the vicinity of onsets and offsets of voicing. The version of the INTSINT algorithm implemented is the two parameter robust version which has been described in recent publications.