A sequencing service provides support 
for the use of sequenced learning objects, 
primarily of use within VLEs and similar environments for the delivery of complex 
learning packages.
The key functions for this service are:
- providing runtime support for sequences, such as getting the next item in a 
sequence.  In future the sequence is likely to be dependent on the learner's activity 
with the current and previous objects.
 
Specifications with applicability in this 
area are:
- IMS Simple sequencing
 
- IMS Learner Design
 
- SCORM
 
Related services are: