Basic

Add	Adding elements of a molecular system into another molecular system
Append structures	Adding structures from a molecular system to another molecular system
Are multiple molecular systems	Verifying the validity of a list of molecular systems
Compare	Comparing molecular systems
Concatenate structures	Concatenating the structures found in a list of molecular systems
Contains	Checking if a molecular system contains certain elements or attributes
Convert	Converting a molecular system into other form or forms
Copy	Making copies of molecular systems
Extract	Extracting a portion of a molecular system
Get attributes	Getting the list of attributes of a molecular system
Get form	Getting the form of a molecular system
Get label	Getting label strings for elements
Get	Getting attribute values from a molecular system
Has attribute	Checking if a molecular system has certain attribute
Info	Printing out summary information of a molecular system
Is a molecular system	Verifying the validity of a molecular system
Is composed of	Checking if a molecular system is composed of specific elements
Iterator	Iterator over attributes of a molecular system
Merge	Merging the elements of different molecular systems
Remove	Removing elements or structures from a molecular system
Select	Selecting elements of a molecular system
Set	Setting attribute values to a molecular system
View	Showing a molecular system
Where is attribute	Getting the item where a specific attribute is found