static int _exercise2( int exsk )

static int _exercise2(int exsk)

    // being good at some weapons makes others easier to learn:

    // Being good at some weapons makes others easier to learn.

        // Blades to Blades.

        // Short Blades and Long Blades.

    // Quick fix for the fact that stealth can't be gained fast enough to
    // keep up with the monster levels, this should speed its advancement

    // Quick fix for the fact that stealth can't be gained fast enough
    // to keep up with the monster levels.  This should speed its
    // advancement.

        bonus += random2(3);

        bonus += random2(30);

    // Spellcasting is cheaper early on, and elementals hinder each other.

    int skill_change = _calc_skill_cost(you.skill_cost_level, you.skills[exsk]);
    // Spellcasting is cheaper early on, and elementals hinder each
    // other.

        // Being good at elemental magic makes other elements harder to learn.

        // Being good at elemental magic makes other elements harder to
        // learn.

        // This system is a bit hard on missile weapons in the late game
        // since they require expendable ammo in order to practise.
        // Increasing the "deg"ree of exercise would make missile
        // weapons too easy earlier on, so instead we're giving them
        // a special case here.

        // This system is a bit hard on missile weapons in the late
        // game, since they require expendable ammo in order to
        // practise.  Increasing the "deg"ree of exercise would make
        // missile weapons too easy earlier on, so, instead, we're
        // giving them a special case here.

        // No free lunch, this is a problem now that we don't
        // have overspending.

        // No free lunch.  This is a problem now that we don't have
        // overspending.

    // Can safely return at any stage before this

    // We can safely return at any stage before this.

    // Starting to learn skills is easier if the appropriate stat is high

    // Starting to learn skills is easier if the appropriate stat is
    // high.

            // These skills are easier for the strong

            // These skills are easier for the strong.

            // These skills are easier for the dexterous

            // These skills are easier for the dexterous.

            // These skills are easier for the smart

            // These skills are easier for the smart.