void cbPStk(DcmStack& stk) {
stack<DcmType*> items;
while (!stk.empty()) {
items.push(stk.top());
stk.pop();
}
while (!items.empty()) {
dcmout << items.top()->repr() << ' ';
stk.push(items.top());
items.pop();
}
dcmout << endl;
}
void cbBottom(DcmStack& stk) {
stk.push(new DcmBool(stk.empty()));
}
void cbClear(DcmStack& stk) {
while (!stk.empty()) {
del(stk.top());
stk.pop();
}
}