Poke uses the usual dot-notation to provide access to struct fields. Examples:
(poke) var s = struct { i = 10, l = 20L }
(poke) s.i
10
(poke) s.l
20L
Writing to fields is achieved by having the field reference in the left side of an assignment statement:
(poke) s.i = 100
(poke) s.l = 200
(poke) s
struct {i=100,l=200L}