Ups forgot the example code: 

{code}
// call the original insertColumn 
void oldInsertColumn (DBE d, int colNr, string title, int width, Icon theIcon) {
     insertColumn (d, colNr, title, width, theIcon) 
}

// our global skip to store the column titles 
Skip g_columnTitles = createString()

// function to make a unique key from a DBE and a column nr
string keystring (DBE x, int nr) { 
    int dAddr = addr_ x     // cast DBE memory address to INT
    return dAddr "_" nr ""  // append underscore and the column number
}

// Now replace the insertColumn to save the title
void insertColumn (DBE d, int nr, string tit, int wd, Icon I) { 
   // put the column title in our skip list with a unique key
   put (g_columnTitles, keystring (d, nr), tit, true)
   // call original insertColumn
   oldInsertColumn (d, nr, tit, wd, I) 
}

string getTitle (DBE x, int nr) {
    string result = null; 
    find (g_columnTitles, keystring (x,nr), result)
    return result
}
{code}esult