Sorry for my english

Hello all my friends and seniors, i had created a programm in c++
(anagrammig of word) it works fine but i cannot understand how exactly
recursion is working , i mean oh.. first look at the code .

    #include <iostream>
    #include <string>
    using namespace std;
    ////////////////////////////////////////////////////////////////
    class word
    {
    private:
    int size; //length of input word
    int count; //numbers in display
    string workStr; //workspace
    void rotate(int); //rotate part of workStr
    void displayWord(); //display workStr
    public:
    word(string); //constructor
    void anagram(int); //anagram ourselves
    };
    //--------------------------------------------------------------
    //constructor
    word::word(string inpStr) : workStr(inpStr), count(0)
    { //initialize workStr
    size = inpStr.length(); //number of characters 
    }
    //--------------------------------------------------------------
    void word::anagram(int newSize)
    {
    cout<<"Inside function"<<" "<<newSize<<endl;
    if(newSize == 1) //if too small,
    return; //go no further
    for(int j=0; j<newSize; j++) //for each position, 
    {
    cout<<"Inside loop before recursion"<<endl;
    anagram(newSize-1); //anagram remaining
    cout<<"After recursion function"<<" "<<newSize<<endl;
    if(newSize==2) //if innermost,
    displayWord(); // display it
    rotate(newSize); //rotate word
    cout<<"After rotate function"<<endl;
    }
    }
    //--------------------------------------------------------------
    //rotate left all chars from position to end
    void word::rotate(int newSize) 
    {
    int j;
    int position = size - newSize;
    char temp = workStr[position]; //save first letter
    for(j=position+1; j<size; j++) //shift others left
    workStr[j-1] = workStr[j];
    workStr[j-1] = temp; //put first on right
    }
    //--------------------------------------------------------------
    void word::displayWord()
    {

    cout << workStr << " ";
    cout << endl;
    }
    ////////////////////////////////////////////////////////////////
    int main()
    {
     string input;
     int length;
     cout << "Enter a word: "; //get word
     cin >> input;
     length = input.length(); //get its length
     word theWord(input); //make a word object
     theWord.anagram(length); //anagram it
     return 0;
     } //end main()

anagram(newSize-1);